Handheld LIBS Spectrometer Fiber Alignment and Sample Detection

The patent applies preliminary action by performing alignment operations before final device assembly. An alignment target is placed on the sample holder, and the fiber optic bundle is aligned to this target prior to securing the sample holder in its final position. This ensures precise alignment is achieved during manufacturing without requiring complex alignment mechanisms in the final device structure.

The patent uses an alignment target as an intermediary object to facilitate precise alignment. The alignment target is placed on the sample holder and serves as a reference for aligning the fiber optic bundle. This intermediary allows manufacturers to achieve high alignment precision without directly aligning the fiber bundle to the sample position, simplifying the overall alignment process.

The patent implements preliminary action by detecting sample presence before the laser is activated. The system checks whether a sample is present on the sample holder prior to allowing laser operation. This preliminary detection prevents the laser from firing into air, ensuring safety without requiring complex continuous monitoring systems during laser operation.

The patent uses feedback by monitoring the alignment target signal to determine sample presence. The system continuously monitors the signal from the alignment target and provides feedback to control whether the laser can operate. If the alignment target signal indicates no sample is present, the system prevents laser activation, creating a safety feedback loop.